US3284481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
alpha, alpha'-bis(substituted sulfonylthio)-p-tolyl ethers
Assignee: Dow Chemical Co
•
Filing: 1963-10-28
•
Granted: 1966-11-08
•
Expires: 1983-10-28
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Dunbar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:44
CPC Classifications
C; C07; C07C; C07C381/00; C07C381/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A COMPOUND CORRESPONDING TO THE FORMULA 4,4''-DI(R-SO2-S-CH2-)DIPHENYL ETHER WHEREIN R REPRESENTS A MEMBER OF THE GROUP CONSISTING OF LOWER ALKYL, PHENYL, LOWER ALKYLPHENYL, HALOPHENYL, AND LOWER ALKYL-HALOPHENYL, WHEREIN HALO REPRESENTS A MEMBER OF THE GRPUP CONSISTING OF CHLORINE, BROMINE AND IODINE.
Claim 2
Dependent Claim
41 words
A COMPOUND CORRESPONDING TO THE FORMULA 4,4''-DI(R-SO2-S-CH2-)DIPHENYL ETHER WHEREIN R REPRESENTS A MEMBER OF THE GROUP CONSISTING OF LOWER ALKYL, PHENYL, LOWER ALKYLPHENYL, HALOPHENYL, AND LOWER ALKYL-HALOPHENYL, WHEREIN HALO REPRESENTS A MEMBER OF THE GRPUP CONSISTING OF CHLORINE, BROMINE AND IODINE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |